Ceramic Fiber Insulation, Insulation Material Aluminum Silicate, Overall Length 3 in, Overall Width 3 in, Thickness 1 in, Maximum Use Temperature 2,300 Degrees F, Density 8 lb/cu ft, R Value @ 1000F 1.06, Form Bulk, Flexibility Flexible, Standards UL 723, Pipe Insulation Item Ceramic Fiber Insulation, Maximum Continuous Use Temperature 1,922 Degrees F, For Piping System Commercial, Industrial Process, For Use On Pipe Insulation, Insulation Color White